What’s new

Filament palettes, the Self-Modeling Studio, and a searchable catalog

Filament palette & multi-color

• Filament palette manager — A standalone palette manager opens from a new 🧵 Palette pill in the viewport: define your printer’s filament slots, reorder or reset them, and constrain new colors to the palette. The paint panel keeps a live swatch row, a custom-color picker, and an over-budget badge (colors used vs. slot capacity), with a “Manage…” link into the full editor — edits propagate everywhere live.
• Slot-aware painting — Painting with a slot stamps each region with a stable slot id, so a multi-color model maps cleanly onto a printer’s AMS/filament slots — recolor a slot and every region on it recolors at once. Multi-color 3MF export now orders its materials by slot so the material index follows AMS slot order, and the export step warns you when a model is over palette budget or when exporting to color-less STL.
• Build a palette from a photo — Import palette colors straight from an image: the manager auto-detects the dominant colors and gives you a click-to-eyedrop canvas to pick exact filament colors from a screenshot. A “Recent colors” history keeps colors you’ve used so you can re-add them as slots.
• Reconcile a model against the palette — A “Colors in this model” view tags every color as on- or off-palette and offers Replace (swap to a palette or recent color), Merge (collapse one color into another), and Apply-palette auto-match (snap every color to its nearest slot). Save, switch, rename, and delete named palette collections for different printers or projects.

Self-Modeling Studio

• Photo → multi-view → 3D — A guided Studio (Import → “Photo → 3D”) turns a single photo into a model: upload a source image, generate a turntable of alternate angles with a Gemini image model (or upload the angles by hand), curate the tiles, then either carve a voxel model from the silhouettes or hand the angle set straight to the AI modeler. Cardinal / Isometric / Full angle-set presets pick how many views to use.
• The AI reads your reference images — The assistant can now pull in attached images as a single labeled grid, so the Studio’s reference angles — and any photos you attach — actually feed the AI’s vision when it models for you.

Catalog

• Searchable, filterable catalog — Both the /catalog page and the in-editor catalog overlay gained a search box and per-language filter pills, so you can narrow a growing gallery by keyword or by modeling language. A new curated “Fidget Toys” group leads the catalog.
• Print-in-place fidgets — The spiral fidget cone is now a real print-in-place mechanism — a cone split by a helical slab into two interleaved ribbons that twist apart straight off the bed, with a built-in clearance gap.

Painting & editor

• Wrap tolerance stops paint at sharp edges — The paintbrush gained a “Wrap tolerance” slider (0–180°, default 90°): a stroke crosses an edge only when the two faces bend by no more than the tolerance, so paint flows over gentle curves but stops at a sharp fold instead of bleeding onto an adjacent face or the next wall of a hollow part.
• Starters you can experiment with — The JavaScript, OpenSCAD, and BREP starters are now capability samplers — a row of primitives, booleans, and operations to poke at — and the voxel starter is a layered pine tree with ornaments and a star. The Quality panel’s curvature preview also gained an explicit Apply button.

Fabric textures, image paint, region-targeted modifiers, and a catalog refresh

Surface textures

• Fabric & knit textures — A new family of surface modifiers wraps a model in stitched fabric: V-strand knit (stockinette), cable knit, waffle stitch, fur / velvet, and woven fabric. The displacement follows the surface via UV unwrapping — BFS triangle unfolding, with LSCM and harmonic-field layouts for cleaner whole-mesh maps — and runs on a WebGPU compute shader where the browser supports it. A mesh-detail slider trades triangle count for fidelity, and the textures are available to the AI assistant too.
• Apply modifiers to part of a model — Every surface modifier — fuzzy skin, smooth, voxelize, and the new fabric textures — now takes a click-to-select flood-fill region selector, so you can texture just one area. Additive multi-region selection, a color-sensitivity control, and triplanar blending round out a redesigned selector UX inside a draggable Surface panel.

Painting

• Image paint — Project an image onto the model surface as color regions: click to stamp it where you point, with a hover preview, rotation, and a smooth (stamp-then-refine) mode that subdivides the footprint so the picture conforms to curvature. Alpha-channel flood fill drops the background, and SVG inputs stamp at full vector quality.
• Smarter color bucket — The bucket now walks and persists the real connected region, with a live flood-fill preview that tracks the tolerance slider. Region selection uses an explicit Preview button instead of auto-previewing on every click.

Catalog

• Catalog quality pass — Redesigned 8 catalog entries and colorized 6 more, added 5 voxel creatures, and shipped five new models — a chain, a hot dog, a voxel castle, a watchtower, and a retro TV.

Viewport & rendering

• Reset view & zoom limit — A reset-view button returns the camera to its default framing, and a zoom-out limit keeps a model from shrinking away into the distance.
• Cancel long renders instead of timing out — Heavy renders no longer hit a hard execution timeout — they run until you cancel them with the Cancel button, so a slow-but-valid model finishes instead of being killed. Out-of-memory failures in the manifold-js engine now surface a clear hint instead of an opaque crash.
• Mesh-quality knobs — The Quality panel’s simplify / enhance controls gained edge-length and size-threshold knobs for finer command over triangle reduction and refinement.

Diagnostics

• Worker health & engine memory — The diagnostics log gained a worker-health panel that surfaces the geometry Worker’s state and each engine’s WASM heap usage. Disconnected-component results now also raise a transient warning toast.

Reliability

• Resilient sessions — The geometry Worker now recovers automatically after a fatal WASM fault, autosaved drafts clear on save (with a warning if you save error-state code), and paint, annotations, and parameters survive switching between parts. SCAD parts cache their mesh so flipping between parts skips a recompile, and Customizer number fields can now exceed their declared min / max.

Multi-file OpenSCAD, unified viewport panels, and instant static pages

Modeling & editor

• 3D text in JavaScript (api.text) — Build raised or cut lettering directly in a manifold-js session with api.text() and api.textSection() — no need to drop to OpenSCAD for a label. OpenSCAD’s own text() primitive now works too, backed by the Liberation Sans font family loaded into WASM.
• Resize panel — A new ⇲ Resize tool in the viewport overlay scales a model along X / Y / Z with independent or uniform sliders, a typeable exact size, an optional “preserve colors” pass, and a live preview before you commit a new version.
• Find / Replace in the editor — A Find/Replace control in the editor header for quickly searching and rewriting code.

OpenSCAD multi-file

• Companion files for multi-file SCAD — Import a .scad file that pulls in your own include <…> / use <…> dependencies and Partwright detects the missing files (by actually compiling), then prompts you to supply them. Companion files get their own editable, syntax-highlighted tabs and persist with the session.
• Two-phase preview & cancel — SCAD renders show a fast preview first, an elapsed-time status bar while the full render runs, and a Cancel button so a long compile never traps you.

Painting

• Color-based bucket & new Replace tool — The Bucket tool can now flood-fill by color as well as by geometry, and a new 🔄 Replace tool swaps one color for another across every matching region at once. Slab is now the default paint surface (and works with spray).
• Projection paintbrush & no more editor lock — A projection-based paintbrush with BVH-accelerated picking and a faster smooth-brush commit. Painting no longer locks the code editor — it stays fully editable, and version history is your rollback path.

Viewport panels

• Unified, draggable overlay panels — The Quality, Resize, Surface, and Relief panels now share one set of UX conventions — draggable, kept on-screen (and mobile-friendly), with consistent headers and behavior.
• Quality panel (was Simplify) — The old Simplify tool is now the ○ Quality panel: it folds curvature quality together with simplify / enhance triangle-count controls in one place.

AI assistant

• Plan-first mode — A new toggle makes the assistant draft a plan and wait for your approval before it touches the model — you can keep refining the plan while approval is pending. Also fixed a Gemini retry loop on malformed function calls.

Pages & polish

• Instant static pages — The landing, catalog, help, legal, and what’s-new pages are now pre-rendered as static, app-free HTML — they paint instantly without loading the editor or WASM, behind a unified top header shared across every non-editor page.
• In-app dialogs everywhere — Native browser alert / confirm / prompt pop-ups are gone, replaced by in-app toasts and dialogs that match the rest of the UI. A “Beta” pill now sits in the landing nav and editor toolbar.
• Version provenance — Saved versions now record where they came from (their parent version and the operation that produced them), laying groundwork for clearer history.

Surface modifiers, Ideas library, and landing page performance

Modeling

• Surface modifiers — Apply post-processing effects to any model: fuzzy skin adds randomized surface noise (mimicking FDM printed texture), smooth rounds out faceted geometry, and voxelize converts the surface to a cube grid. All three are available from the command palette, the viewport overlay, and the window.partwright API. Paint carries through the modifier via nearest-triangle transfer, and each apply creates an undoable new version with a live preview before committing.

AI assistant

• Ideas page and in-pane prompt library — A new /ideas page showcases starter prompts and technique ideas. In the AI panel, clicking 💡 opens a searchable prompt library — pick a tile to populate the input without sending. Empty-state chips suggest quick starts when the chat is blank.
• Printability feedback — The AI now sees printability data (overhangs, thin walls, floating parts, non-manifold status) in its tool responses. The viewport shows a live printability indicator after each successful render.
• Import confirmation — The AI must now show a confirmation dialog before importing files into a session — you see exactly what it intends to import and can accept or cancel.

Relief Studio

• Remove background, double-sided, and mirror — Three new import options: automatic background removal (reads the alpha channel when available, pre-quantization RGB otherwise), a double-sided toggle for wall-hung reliefs, and a mirror axis selector.

Settings

• Advanced Settings overhaul — 30 new configurable fields across AI, renderer, import, and UI — each with a ? tooltip explaining what it controls. The start-fresh / uninstall action moved from the landing page into Advanced Settings.

Performance

• Landing page speed and stability — The landing page now renders from static HTML before JavaScript loads, eliminating black-screen flash and layout shift on first visit. Skeleton ghost loaders fill catalog and session tiles while data arrives; fonts use fallback rendering to prevent reflow; WASM loads are deferred until the editor actually opens.

AI slash commands, custom endpoints, and auto-continue

AI assistant

• Slash commands — Type / in the AI chat input to get a pop-up menu of quick commands (keyboard-navigable, floats above the input, only fires when the selection is unambiguous).
• Custom OpenAI-compatible endpoint — Point the built-in AI at any self-hosted OpenAI-compatible server — llama.cpp, vLLM, LM Studio, and similar — by setting a base URL and model name. The API key is optional; the CSP now passes traffic through to custom origins.
• Auto-continue (♾) — A new ♾ toggle makes the agent keep working across multiple turns until it explicitly calls a finish tool, instead of stopping at every end_turn. On by default in Standard and Full presets; bounded by the existing iteration and spend caps. Toggle state is remembered across reloads.

Import

• Import session from URL — Paste a URL that resolves to a .partwright.json and it loads directly — no download-then-upload step. The import target modal (new part / add to current / new session) applies as usual.

Voxel

• Improved image import — The voxel image-import wizard is now modal-first with a custom palette picker and editable JavaScript codegen — tweak the generated code before it lands in the editor. Repeated voxel groups collapse into compact for-loops automatically.

Branding

• New voxel-P logo and landing theme — A pixel-art voxel P mark replaces the old logo across the app; the landing page now uses a calmer, studio-style theme.

New modeling engines, image relief, and sharing

New ways to model

• Voxel engine — A brand-new voxel modeling language — build from cubes, import an image as voxels or load a .vox file, paint individual voxels, and surface the result with rounded edges. Includes cylinder, mirror, translate, and hollow operations.
• BREP solids (OpenCASCADE) — True solid modeling via replicad: selective edge fillets and chamfers, STEP import and export, plus cone, torus, revolve, shell, and linear/circular patterns. Reach it from api.BREP.* inside a JavaScript session, or switch a session fully to the BREP language.
• Signed-distance fields (api.sdf) — Model with SDF primitives and combinators, including a TPMS family (gyroid and friends), polarRepeat / repeatN tiling, and smooth boolean blends — great for organic and lattice geometry.
• Customizer parameters (api.params) — Declare tunable parameters in your code and adjust them from a parameter panel without editing the source.

Relief Studio

• Image-to-relief wizard — A HueForge-style studio turns a photo into a painted relief, with a guided 2-column wizard, 512px resolution, crop, a live 3D preview, and remembered recents.
• Stepped relief & tiles — Z-banded stepped relief that prints faithfully on a single nozzle (with an invert-heights toggle), plus flat-color, silhouette, and SVG tile inputs, tile chamfers, and freely-positioned keychain holes.

Painting

• Geodesic & airbrush tools — A surface-following brush with curvature-adaptive refinement and boundary-conforming edges, plus a dither-spray airbrush that stays on the connected surface.
• Paint by name (api.label) — Label regions directly in code (JavaScript and OpenSCAD) and paint them by name — and model-declared colors now export to 3MF and OBJ. The palette editor recolors regions in place.

Sharing & sessions

• Shareable session links — Generate a fully client-side link that opens a read-only preview of your model — anyone can view it and fork it into their own editable session. No server, nothing uploaded.
• Multi-select parts — Select multiple parts in the rail to bulk-delete or merge them into one, and import external meshes as new parts.

Catalog

• Dozens of new models — Colored BREP showcases (Robot Buddy, Bird Feeder, pendant lamp, vintage camera, wall clock, coffee mug, lighthouse), BOSL2 OpenSCAD entries, SDF showcases, and new parametric models.

Workspace overhaul, smoother painting, and AI controls

Workspace & layout

• Activity rail & unified sidebar — The old tab strip became a labeled activity rail, with Workspace and Parts stacked into a single left sidebar and the session switcher moved into the rail header.
• Docked, resizable AI panel — The AI assistant now opens by default as a persistent, resizable layout column, with the toggle strip tidied behind an Options disclosure.
• Command palette & shortcuts — Press ⌘K / Ctrl+K for a searchable command palette, and ? for a keyboard cheat sheet. Added OS-aware undo / redo / save shortcuts and faster custom tooltips.
• Multi-part sessions — Hold multiple objects in one session via an IDE-style parts rail with per-part geometry previews.
• Versions tab & About dialog — A dedicated Versions tab with thumbnail previews in the session list, plus an About dialog showing build and version info.
• Editor niceties — Autocomplete for the manifold-js API and a mesh-edge (wireframe) viewport toggle.

Painting & meshes

• Smooth paintbrush — A smooth brush with adaptive edge subdivision (offloaded to a Web Worker with a Cancel button), a detail slider, and smooth edges for slab and shape painting.
• Simplify tool — Reduce a model’s triangle count behind an Apply button with a progress bar; the original mesh is preserved when you save a simplified version.

AI assistant

• Per-session thinking level — A 🧠 control sets the reasoning effort across cloud providers, with a collapsible thinking box for models that expose their reasoning.
• Upgraded render views — A reworked renderViews replaces the old Views/Elevations tabs, and budget presets gained render-resolution, angle, and notes knobs.

Quality & viewing

• Ultra quality tier — A new Ultra (1024-segment) preset plus custom segment counts; the quality preset now drives curve smoothness everywhere.
• Read-only viewer mode — A dim-overlay viewer mode with reliable, reload-based take-control for shared tabs.

Catalog

• 20+ colorized models — New gallery models across game, medieval, and retro themes, with clean hero thumbnails and a randomized featured catalog on the landing page.

Launch & foundations

• Browser-based parametric CAD — The first releases: a live code editor, a Three.js viewport, sessions with versioning, and GLB / STL / OBJ / 3MF export — all powered by manifold-3d, running entirely in the browser.
• Built for AI agents — The window.partwright console API (with the legacy window.mainifold alias), session-context notes for resuming work, and the /ai.md agent reference, refined for agent discoverability.
• Onboarding — A first-visit guided tour, auto-created sessions, and an auto-run toggle so geometry re-renders as you type.
• Infrastructure — A staging → production deployment pipeline, CSP and security hardening, and social-preview images.